40500040 has 64 divisors (see below), whose sum is σ = 105177600. Its totient is φ = 13747968.

The previous prime is 40500011. The next prime is 40500049. The reversal of 40500040 is 4000504.

It is not an unprimeable number, because it can be changed into a prime (40500049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29857 + ... + 31183.

It is an arithmetic number, because the mean of its divisors is an integer number (1643400).

Almost surely, 2^40500040 is an apocalyptic number.

40500040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40500040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52588800).

40500040 is an abundant number, since it is smaller than the sum of its proper divisors (64677560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40500040 is a wasteful number, since it uses less digits than its factorization.

40500040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 40500040 is about 6363.9641733750. The cubic root of 40500040 is about 343.4143858242.

Adding to 40500040 its reverse (4000504), we get a palindrome (44500544).

The spelling of 40500040 in words is "forty million, five hundred thousand, forty".